Log in

Relevant bibliographies by topics / Tractor trailer combinations

Contents

Journal articles
Dissertations / Theses
Books
Book chapters
Conference papers

Academic literature on the topic 'Tractor trailer combinations'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 August 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Tractor trailer combinations.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Tractor trailer combinations"

1

Cole, D. J., and D. Cebon. "Influence of tractor—trailer interaction on assessment of road damaging performance." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 212, no. 1 (January 1, 1998): 1–10. http://dx.doi.org/10.1243/0954407981525759.

Full text

Abstract:

The influence of dynamic interaction between tractor and trailer on the assessment of the road damaging performance of heavy goods vehicles is investigated using simple mathematical models. Tractor and trailer damage indices are used to quantify the ‘in-service’ road damaging performance of a simulated fleet of vehicles with parametric variations typical of highway traffic in the United Kingdom. Simulated results of assessment tests on individual tractor—trailer combinations are correlated with the performance of the simulated vehicle fleet. The main aim is to establish the characteristics of a ‘standard’ semi-trailer to be used in the assessment of tractors, and a ‘standard’ tractor for testing semi-trailers. It is found that measurement of suspension ‘frequency’ gives the poorest correlation with the damage indices, while the ‘dynamic aggregate force coefficient’ gives the best correlation. Correlation achieved when assessing trailers is higher than when assessing tractors. Optimum specifications for standard test tractors and trailers to maximize test accuracy are determined.

APA, Harvard, Vancouver, ISO, and other styles

2

Abu-Hamdeh, Nidal H., and Hamid F. Al-Jalil. "Computer simulation of stability and control of tractor-trailed implement combinations under different operating conditions." Bragantia 63, no. 1 (2004): 149–62. http://dx.doi.org/10.1590/s0006-87052004000100015.

Full text

Abstract:

The mechanics of a tractor-trailer system moving up and down sloping ground under different operating conditions was theoretically simulated. A computer program was developed to analyze the system to predict the effect of both the trailer loading weight and the slope angle on the tractor stability, traction ability, and drawbar loading. The program was used to analyze a tractor-trailer system moving at uniform motion up and downhill. The results of this analysis showed that the tractor becomes unstable when towing a 3750 kg trailer uphill at 28° slope angle. Insufficient traction occurred at slope angles ranging from 15° to 18° corresponding to trailer weight of 3750 to 750 kg. The parallel component of drawbar pull reached a maximum value of 17318 N when the trailer was pushing the tractor downhill at 30° slope angle. The normal component (normal to the tractive surface) showed similar maximum values for both uphill and downhill motions of the system. The use of computer analysis in this study provided a significant improvement in predicting the effect of different parameters on stability and control of tractor-trailer combination on sloping ground.

APA, Harvard, Vancouver, ISO, and other styles

3

Jílek, L., R. Pražan, V. Podpěra, and I. Gerndtová. "The effect of the tractor engine rated power on diesel fuel consumption during material transport." Research in Agricultural Engineering 54, No. 1 (March 3, 2008): 1–8. http://dx.doi.org/10.17221/710-rae.

Full text

Abstract:

The authors of this paper determined in a field measurement how the change of the tractor engine power in a tractor-trailer combination affects the diesel fuel consumption related to the unit of transport output (l/tkm) and the transport performance (t/h) in the conditions of a mountainous region. Transport combinations (tractor – trailer) were compared that were formed by a tipping trailer connected to three tractors with different engine powers when passing allong a route with the gradient of 0°–5.5°. It is obvious from the results of these measurements that the diesel fuel consumption differed by up to 27% in individual combinations. The lowest specific consumption on the measured route was found in the combination with the tractor with the engine rated power of 50 kW (0.037 to 0.077 l/tkm), the highest consumption with the tractor with the rated engine power of 114 kW (0.056 to 0.093 l/tkm). The lowest transport performance on the measured route was found in the combination with the tractor with the engine rated power of 63 kW (19.37 t/h), the highest performance with the tractor with the rated engine power of 114 kW (43.42 t/h).

APA, Harvard, Vancouver, ISO, and other styles

4

Bumgarner, Sean, Martin “Trae” Span, and Jeremy Daily. "A Systems Engineering Approach to Reducing Mis‐pulls and Misplaced Trailers for Trucking Fleets." INCOSE International Symposium 33, no. 1 (July 2023): 1300–1314. http://dx.doi.org/10.1002/iis2.13083.

Full text

Abstract:

AbstractHeavy vehicle fleets can have more than three times the number of trailers than tractors, but tractors host most of the vehicle network and tracking systems. Tractor location is readily available through telematics systems, yet trucking operations may pull the wrong trailer during operations because of the lack of trailer location information. The lack of automated trailer location data can lead to lost or mis‐placed trailers, which compromises the service of the product being shipped. Adding dedicated telematics systems to individual trailers is cost prohibitive. Therefore, we propose leveraging the tractor's existing location data with unique identifiers from the trailer to geo‐reference trailers. The goal of the proposed system is to use existing truck and trailer hardware (i.e. the braking system controllers) to identify the trailer serial numbers to the truck‐tractor, which creates geo‐referenced tractor‐trailer combinations. This work follows a system engineering approach for a trailer tracking system design beginning with a thorough review of the problem and customer need, generating concise requirements, conducting a tradeoff study of potential solutions, and demonstrating the proposed solution on a test bench. A systems engineering approach following the International Organization for Standardization (ISO) 15288 and International Council on Systems Engineering (INCOSE) technical processes is used for this design and development effort. This work demonstrates a novel approach, delivering a trailer tracking capability fielded through minimal changes to existing hardware and software. This automated trailer location system would reduce mis‐pulled and temporarily misplaced trailers, thus saving time and money for fleet operations worldwide.

APA, Harvard, Vancouver, ISO, and other styles

5

Leuschen, Jason. "The Effects of Ground Simulation on Tractor-Trailer Combinations." SAE International Journal of Commercial Vehicles 6, no. 2 (September 24, 2013): 510–21. http://dx.doi.org/10.4271/2013-01-2454.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

HATANO, Tadashi, Atsunari HIROTA, and Harushige YANAGISAWA. "A Coupling Mechanism of Tractor and Semi-Trailer Combinations." Transactions of the Japan Society of Mechanical Engineers Series C 65, no. 636 (1999): 3355–61. http://dx.doi.org/10.1299/kikaic.65.3355.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Yang, Xiujian. "Optimal Reconfiguration Control of the Yaw Stability of the Tractor-Semitrailer Vehicle." Mathematical Problems in Engineering 2012 (2012): 1–23. http://dx.doi.org/10.1155/2012/602502.

Full text

Abstract:

An optimal reconfiguration control scheme based on control allocation (CA) is proposed to stabilize the yaw dynamics of the tractor-semitrailer vehicle. The proposed control scheme is a two-level structure consisting of an upper level of sliding mode yaw moment controller (SMYC) and a lower optimal brake force distributor (BFD). The upper SMYC is designed to follow the tractor yaw rate and the combination of the hitch angle and trailer slip angle and outputs the corrective yaw moment, respectively, for the tractor and the trailer. The optimal brake force allocation and reconfigurable control problem is transformed to a problem of error minimization and control minimization combination formulated by constrained weighted least squares (CWLS) optimization and further solved with active set (AS) algorithm. Simulation results reveal that the CA technique-based optimal reconfigurable control is rather effective for the tractor-semitrailer vehicle to enhance the yaw stability performance and the reliability in case of actuator failure thanks to the multiple-axle structure enriching the alternatives of possible actuator combinations in CA optimization.

APA, Harvard, Vancouver, ISO, and other styles

8

Regehr, Jonathan D., Jeannette Montufar, and Garreth Rempel. "Safety performance of longer combination vehicles relative to other articulated trucks." Canadian Journal of Civil Engineering 36, no. 1 (January 2009): 40–49. http://dx.doi.org/10.1139/l08-109.

Full text

Abstract:

This article helps improve the understanding about the safety performance of longer combination vehicles (LCVs) relative to other articulated trucks operating on rural highways, using evidence from the Canadian portion of the CANAMEX trade corridor. The analysis reveals that from a collision rate perspective, LCVs as a group have better safety performance than other articulated trucks. Turnpike doubles have the lowest collision rate of all articulated truck types (16 collisions per 100 million vehicle-kilometres of travel or VKT), followed by Rocky Mountain doubles (32 collisions per 100 million VKT). The collision rate for triple trailer combinations (62 collisions per 100 million VKT) is higher than the collision rates for tractor semitrailers (42 collisions per 100 million VKT) and legal-length tractor double trailers (44 collisions per 100 million VKT). These results are an important input for civil engineering and transport policy decisions concerning longer combination vehicle operations.

APA, Harvard, Vancouver, ISO, and other styles

9

Xu, Hongguo, Yihua Zhang, Hongfei Liu, Shaosen Qi, and Weijuan Li. "Effects of configuration parameters on lateral dynamics of tractor–two trailer combinations." Advances in Mechanical Engineering 7, no. 12 (December 2015): 168781401561816. http://dx.doi.org/10.1177/1687814015618165.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Dechao, Zeng, Zhu Yonghua, and Zhou Yiming. "A mathematical model for sideways overturning performance of tractor and trailer combinations." Journal of Terramechanics 26, no. 3-4 (January 1989): 193–200. http://dx.doi.org/10.1016/0022-4898(89)90035-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Dissertations / Theses on the topic "Tractor trailer combinations"

1

Ghuge, Harshavardhan Roy Christopher J. "Detached eddy simulations of a simplified tractor-trailer geometry." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2006%20Fall/Theses/GHUGE_HARSHAVARDHAN_18.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Wacker, Thomas. "A preliminary study of configuration effects on the drag of a tractor-trailer combination." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25143.

Full text

Abstract:

The effect of configuration changes and add-on devices on the drag reduction of a tractor-trailer is studied through wind tunnel tests using two 1/12-scale models. The configuration changes involve ground clearance, tractor-trailer gap, roof angle and back inclination while add-on devices include flow deflectors, skirts and gap seals. Moving surface boundary layer control as a means of drag reduction is also attempted. Both drag and pressure data are obtained to help identify local contributions. Results suggest that an optimum combination of configuration parameters can reduce drag up to 17% while the add-on devices resulted in a further decrease by a modest amount. The results with moving surface boundary layer control proved to be inconclusive.
Applied Science, Faculty of
Mechanical Engineering, Department of
Graduate

APA, Harvard, Vancouver, ISO, and other styles

3

Doyle, Joshua Brian Hartfield Roy J. "Aerodynamic optimization for freight trucks using a genetic algorithm and CFD." Auburn, Ala, 2007. http://repo.lib.auburn.edu/2007%20Fall%20Theses/Doyle_Joshua_41.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Chandrasekharan, Santhosh. "Development of a tractor-semitrailer roll stability control model." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1196260360.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Srinivasan, K. Venkatesh. "Implementation of an Unmanned Aerial Vehicle for New Generation Peterbilt Trucks." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849706/.

Full text

Abstract:

As science and technology continue to advance, innovative developments in transportation can enhance product safety and security for the benefit and welfare of society. The federal government requires every commercial truck to be inspected before each trip. This pre-trip inspection ensures the safe mechanical condition of each vehicle before it is used. An Unmanned Aerial Vehicle (UAV) could be used to provide an automated inspection, thus reducing driver workload, inspection costs and time while increasing inspection accuracy. This thesis develops a primary component of the algorithm that is required to implement UAV pre-trip inspections for commercial trucks using an android-based application. Specifically, this thesis provides foundational work of providing stable height control in an outdoor environment using a laser sensor and an android flight control application that includes take-off, landing, throttle control, and real-time video transmission. The height algorithm developed is the core of this thesis project. Phantom 2 Vision+ uses a pressure sensor to calculate the altitude of the drone for height stabilization. However, these altitude readings do not provide the precision required for this project. Rather, the goal of autonomously controlling height with great precision necessitated the use of a laser rangefinder sensor in the development of the height control algorithm. Another major contribution from this thesis research is to extend the limited capabilities of the DJI software development kit in order to provide more sophisticated control goals without modifying the drone dynamics. The results of this project are also directly applicable to a number of additional uses of drones in the transportation industry.

APA, Harvard, Vancouver, ISO, and other styles

6

Haldane, Mandy Jaye. "Assessing the impacts of multi-combination vehicles on traffic operation." Thesis, Queensland University of Technology, 2002. https://eprints.qut.edu.au/36180/1/36180_Haldane_2002.pdf.

Full text

Abstract:

The Australian road freight industry is moving towards improved efficiency and competitiveness through the use of larger and more innovative multi-combination vehicles (MCVs). However, this move has brought about concern over the interaction of these new vehicles with the environment, existing infrastructure and other road users. The aim of this research project was to assess the impacts of MCVs on traffic operation and safety. This was undertaken by initially reviewing cunent literature on MCVs. It was recognised that the Australian heavy vehicle fleet had modernised since a number of performance levels were established and the review highlighted the need for greater research to obtain current data and either develop new performance levels or validate previous research. This study selected four characteristics for analysis: passenger car equivalence (PCE), clearance time, acceleration, and tracking ability on a straight path. These characteristics were considered to be the most influential on the interaction between MCVs and other road users. Vehicle operational data was collected between April and August 2001, for each characteristic, via a series of three in-field test programs located on controlled road sections in Queensland: south of Charters Towers; west of Toowoomba; and at the Mount Cotton Training Centre, south-east of Brisbane. All tested MCVs recorded a PCE greater than 2 for a through-movement on a flat grade with no adjacent traffic lanes. It was determined that assuming a constant PCE does not account for the variation in values attained for different MCV types. Under circumstances where MCV volumes are significant, it would be more accurate to establish the average PCE value of each relevant movement at the intersection based on PCEs across the traffic spectrum and using the values provided in Table 5.4. Further testing is needed to establish PCE values on grades, turning movements, non-standard lane widths, and for vehicles such as Double Road Trains, AB-Triples and AAB-Quads. The intersection clearance time characteristics proposed by NRTC (2001) were found to be conservative for the MCV s tested. To cover a greater range of operating conditions, clearance time requirements for a MCV on a particular grade may be derived from the trajectory curves provided in Figures 6.3 to 6.6. Further in-field testing should be undertaken to obtain additional trajectory curves for MCVs with lower powered engines. Speed curves were developed (Figures 6.9 to 6.12) which may be used with the above trajectory curves to derive vehicle speeds at specific distances, on particular grades. This would enable assessors to determine the minimum entry lane length required to allow a MCV to attain adequate speed to merge into moving traffic, and also indicate whether an overtaking lane is required on a steep ascending grade. Further testing should be undertaken to establish speed curves over a higher speed and distance range . . Queensland Department of Main Roads (1998b) recommended an average acceleration rate for use in sight distance calculations. This was found from testing to be generally conservative for a B-Double, although too high for all the other MCVs tested. The trajectory curves provided in Figures 6.15 to 6.18 were developed to examine the variation in acceleration as test vehicles depart from rest. These may be used to determine average acceleration rates, over specific distances and on particular grades. Alternatively, sight distance requirements may be determined from equation (6.9), using clearance times established from equation (6.5) or Figures 6.3 to 6.6. Data on tracking ability of MCVs on a straight path was collected. It is recommended that further work be conducted to analyse the data, determine lane width requirements, and variations in tracking ability between separate trailers. The findings should be compared with Prem et al. (2000) and NRTC (2001) values. Further work is also required to identify which factors most influence lateral displacement of the rear trailer. It is expected that the research findings will be used to inform development of Queensland Department of Main Roads' Route Assessment Guidelines and potentially those of other authorities.

APA, Harvard, Vancouver, ISO, and other styles

7

Karmiadji, Djoko Wahyu. "Interaction between the tractor and trailer as a multibody system /." 1997. http://arrow.unisa.edu.au:8081/1959.8/84085.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Bambe, Anita. "Measuring the non-pecuniary costs of triple trailer operation in Oregon : a contingent valuation approach." Thesis, 1994. http://hdl.handle.net/1957/35258.

Full text

Abstract:

The purpose of this study is to measure the costs of the perceived safety threat from triple trailer operation in Oregon. This is done using the political referendum model of a common non-market valuation technique, contingent valuation. Specifically, the average cost of allowing triples will be found so that comparison with previously estimated benefits will provide a measure of net social welfare associated with triple trailer use. The data were collected through in-person interviews conducted in five regions in Oregon. Questions relating to the respondents' attitudes toward triple trailer trucks, driving experience, education and other demographics were asked. The empirical model estimates the probability that respondents will vote to ban triple trailers. The results of this study suggest that there are concerns about the safety of triple trailer operation. However, there seem to be still greater benefits; a result which is consistent with the recent ballot measure.
Graduation date: 1995

APA, Harvard, Vancouver, ISO, and other styles

9

Kosior, Jacob Michael. "Wind driven instability of tractor-trailer combinations." 1989. http://hdl.handle.net/1993/9565.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Tractor trailer combinations"

1

Manolis, Kay. Big rigs. Minneapolis, Minn: Bellwether Media, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

2

1950-, Mason John M., ed. Annotated bibliography of research on operational characteristics and geometric design implications of longer and wider trucks. College Station, Tex: Texas Transportation Institute, the Texas A&M University System, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

3

Board, Transportation Research, ed. Twin trailer trucks: Effects on highways safety. Washington, D.C: Transportation Research Board, National Research Council, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

4

Mike Byrnes & Associates., ed. Bumper to bumper: The complete guide to tractor-trailer operations. Tempe, Arizona: M. Byrnes & Associates, 1988.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

5

Doug, Grieve, ed. Evolution of cab-over-engine trucks. Hudson, WI: Iconografix, 2011.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

6

Ransom, Candice F. Camiones grandes. Minneapolis: Lerner, 2007.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

7

SmartWay Transport Partnership Program (U.S.). Reduce your idling: Go the SmartWay to save money and stay healthy : owner operators/truckers. Washington, DC]: United States Environmental Protection Agency, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

8

National Research Council (U.S.). Transportation Research Board., ed. Twin trailer trucks: Effects on highways and highway safety. Washington, D.C: Transportation Research Board, National Research Council, 1986.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

9

Woodrooffe, J. H. F. Technical analysis and recommended practice for the double-drawbar dolly using self-steering axles. Ottawa: Roads and Transportation Association of Canada, 1989.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

10

Garber, Bette S. Ultra-custom semi trucks. Minneapolis: MBI and Motorbooks, 2008.

Find full text

APA, Harvard, Vancouver, ISO, and other styles

More sources

Book chapters on the topic "Tractor trailer combinations"

1

Van Raemdonck, Gandert M. R., and Michel J. L. van Tooren. "Data Acquisition of a Tractor-Trailer Combination to Register Aerodynamic Performances." In The Aerodynamics of Heavy Vehicles II: Trucks, Buses, and Trains, 299–310. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85070-0_26.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Airoldi, Gianfranco, Mario Tamagnone, Marco Manzone, and Angela Calvo. "Track Width for a Safe Travelling of a Timber Tractor-Trailer Combination." In Lecture Notes in Civil Engineering, 442–48. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-98092-4_45.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Nayeri, Christian Navid, Johannes Haff, David Greenblatt, Lennart Loefdahl, and Christian Oliver Paschereit. "Drag Reduction on a Generic Tractor-Trailer using Active Flow Control in Combination with Solid Flaps." In The Aerodynamics of Heavy Vehicles II: Trucks, Buses, and Trains, 179–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85070-0_14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gros-Hardt, S., and H. Korte. "Smart Traction – Design And Experimental Set up of a Track and Traction-Regulated Caterpillar-Track Chassis for Agricultural Tractor-Trailer Combinations." In AgEng LAND.TECHNIK 2022, 589–94. VDI Verlag, 2022. http://dx.doi.org/10.51202/9783181024065-589.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Gagneja, Abhishek, Dr Amit Kumar Gupta, and Prof Brejesh Lall. "Social Distancing Monitoring System Using Deep Learning." In Wireless Communication Networks and Applications, 127–36. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/nbennurch74.

Full text

Abstract:

We also developed a socially relevant use case application of pedestrian detection with a Social Distancing Monitoring System. We used a pre-trained YOLO V3 and SORT tracker to generate detection and assign them unique IDs for the duration of their visibility. We then use a combination of homographic projection and Euclidean distance measurement to record whether a given pair of IDs are violating the social distancing norms of distance and duration of violation, hence incorporating both guidelines issued by the WHO regarding social distancing

APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Tractor trailer combinations"

1

van de Wouw, Nathan, Paul Ritzen, Erik Roebroek, Zhong-Ping Jiang, and Henk Nijmeijer. "Active trailer steering for robotic tractor-trailer combinations." In 2015 54th IEEE Conference on Decision and Control (CDC). IEEE, 2015. http://dx.doi.org/10.1109/cdc.2015.7402853.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

von Glasner, Egon-Christian, Hans-Christian Pflug, Rolf Povel, and Klaus Wüst. "The Compatibility of Tractor/Trailer-Combinations During Braking Maneuvers." In International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/973282.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hagelthorn, G. Allan. "Preload Adjustment of Wheel Bearings on Tractor Trailer Combinations - Latest Developments." In International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2000. http://dx.doi.org/10.4271/2000-01-3496.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Jiang, Zhenyu, Moustafa El-Gindy, and Donald Streit. "Ride Comfort of Five-Axle Tractor/Semi-Trailer." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1202.

Full text

Abstract:

Abstract The issue of ride comfort for vehicle operations has recently generated considerable interest especially in heavy vehicle systems since long-distance drivers are more likely to experience high levels of vibration. This paper introduces the general concept of vibration-related health problems, discusses ride comfort assessment criteria and methods, and then focuses on the methodology of using computer simulation to analyze ride comfort. The computer-based ride comfort model can be divided into three sub-models: vehicle model, driver/seat model, and road profile input model. Several vehicle models and driver/seat models are reviewed and detailed modeling techniques are introduced. A five-axle tractor/semi-trailer/driver combination ride comfort simulation model is developed in this paper using the software DADS. Both four-spring tandem suspension and independent air spring suspension are studied. Road profiles are assumed as static zero mean Gaussian random process. Vertical acceleration at the interface between seat and driver body is obtained from simulation results. Power spectral density and root mean square (RMS) vertical acceleration are calculated based on simulation results. RMS acceleration at ISO classified good and average roads are compared with ISO 8-hour fatigue vibration limit. It is found that RMS acceleration of this particular vehicle simulated in this paper is below the ISO 8-hour fatigue limit for both good and average roads when traveling at the speed of fifty miles per hour. This implies a good ride comfort. Axle dynamic load coefficients (DLC) are calculated for four suspension configurations that are combinations of air springs and steel springs. Results show that large DLC doesn’t necessarily indicate bad ride quality.

APA, Harvard, Vancouver, ISO, and other styles

5

Hagelthorn, G. Allan. "Preload Adjustments of Wheel Bearings on Tractor-Trailer Combinations - The Factors of Compliance." In SAE Commercial Vehicle Engineering Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2004. http://dx.doi.org/10.4271/2004-01-2693.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Mclandress, Andrew S., Wolfram Wiese, James Turney, and Josef Loczi. "A Two-Dimensional External Aerodynamics Tool (EAT) for Simulating Airflow around Tractor-Trailer Combinations." In International Truck & Bus Meeting & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-2743.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Feng, Jiaming, and Zhaocong Sun. "Path-Tracking Control and Following Control of Tractor-Semitrailer Combination Based on Improved MPC." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0695.

Full text

Abstract:

<div class="section abstract"><div class="htmlview paragraph">In recent years, the tractor-semitrailer combination has become the primary vehicle of China's long-distance freight system. In this paper, with the aim of optimizing the path tracking control and following control of the tractor-semitrailer combination, a kinematics-based path tracking control scheme is proposed. Firstly, a kinematic model of the tractor-semitrailer combination has been constructed. The control of the tractor-semitrailer combination is simplified to focus on three control points based on the kinematics model. Secondly, the path tracking control algorithm and the following control algorithm of the tractor-semitrailer combination are proposed in this paper. The improved MPC is used for path-tracking control of tractor-semitrailer combinations. The cost function of rolling optimization steps is intended, and the optimal line is determined with the lateral deviation, the variation of lateral error, and the deviation of heading angle as the input. At the same time, the following control algorithm enables the trailer to follow the tractor's trajectory. Finally, this paper simulates the algorithm and establishes the model in MATLAB. In the simulation of the path tracking control algorithm at low speed, the tracking error can be controlled within 50 mm. Finally, in the simulation of the following control algorithm, the error can be controlled within 10 mm. In this paper, the path tracking control algorithm and the following control algorithm are used to solve the off-tracking of the tractor-semitrailer combination. It is expected that the research can promote the intelligent development of the tractor-semitrailer combination.</div></div>

APA, Harvard, Vancouver, ISO, and other styles

8

Hoover, Richard L., Scott B. Zagorski, and Tim Van Buskirk. "Air Disc and S-Cam Brake Stopping Performance Comparison for Class 8 Tractor and Trailer Combinations." In 2005 SAE Commercial Vehicle Engineering Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2005. http://dx.doi.org/10.4271/2005-01-3614.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

McAuliffe, Brian, and Mojtaba Ahmadi-Baloutaki. "An Investigation of the Influence of Close-Proximity Traffic on the Aerodynamic Drag Experienced by Tractor-Trailer Combinations." In WCX SAE World Congress Experience. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-01-0648.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Atiqullah, Mir, Rigoverto Sanchez, and Benjamin Hamler. "Undergraduate Research on Trailer-Truck Aerodynamic Drag." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65218.

Full text

Abstract:

The transportation industry is heavily dependent on ‘big rigs’ or semitrailers. Since its introduction during 1920s semitrailers have revolutionized the industry. However their geometrical designs have not evolved much to make them aerodynamically more streamlined, thus more fuel efficient. While over 5.6 million such commercial trailer trucks are registered in the country and with increasing diesel fuel prices, it is more important than ever to study their aerodynamics, redesign for reducing aerodynamic drag and help make these ‘big rigs’ more fuel efficient. Aerodynamic drag is the force that acts on a solid object moving in air due to difference in dynamic pressure developed around that object. Skin friction also causes resistance force which is small compared to pressure induced drag. Higher drag resistance, just like road and tire resistance, causes loss of energy and thereby lowers fuel mileage. Drag resistance is caused by both surface friction as well as air pressure difference around a moving object/vehicle. An ideal remedy is of course to completely redesign the shape and size of these semitrailers to conform to those with known low drag. Another intermediate approach would be to retrofit the existing semitrailers with devices that change the overall shape towards more aerodynamic ones. During the recent past a wide range of such add on devices have been introduced. Current research was directed in two fronts: CAD and Drag simulation as well as experimental drag testing. First a base CAD model and then various modifications were developed using an industry standard CAD package. These models were then imported into Computational Fluid Dynamics (CFD) software. These followed by modeling add-on devices to reduce drag. The simulations were repeated with various combinations of these add-on drag reducers. The areas targeted for drag reduction study included gap between tractor and trailer, lower sides of the trailer between front and rear wheel sets, and rear of the trailer. The results showed varying effectiveness of these add-on devices, individually and in combination. Scale models of the trailer truck were built using wood as well as Rapid Prototyping (RP) directly from CAD using polymer. These models were then tested in the wind tunnel at speeds between 35 and 75 miles per hour. The data and the trends in Cd values compared well with the simulated values. The overall CFD and scale model studies provided a comprehensive knowledge and understanding of the drag in semi-trailers and factors that affect it. Future studies may expand the varieties and locations of these devices as well as complete redesigns of the trailer-trucks.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!